Stone-breaker



(No Model.)

A R. MOCULLY.

STONE BREAKER. f

Patented Augv.w18, 1896. Y

i UNITED STATES PATENT QFFICE.

ROBERTinaccur, or PHILADELPHIA,PENNSYLVANIA.

STONE- SPECIFICATION forming partof Letters` 566,088, dated August 18,1896.

Application had septemterir; rest.: serai Nt. 213,797. or@ model.)

. new and useful Improvements in Stone- Breakers, of which the followingis a specification, reference being had therein to the accompanyingdrawing, wherein'the figure is a vertical section, partly A inelevation, of a stone-breaking and ore-crushingmachine'embodying myimprovements. My invention has relation to crushingmills having gyratoryshafts and Crusher.- heads, having particular reference to the form. ofmills shown and described in Letters Pat-V ent of the United Statesissued to me on the 7th day of September, 1886, Nos. 348,7 57 and848,758; and it has for its object the construction and combination ofparts to increase the efficiency and durability ofthe mill. Q

` My invention accordingly consists of the combination, construction,and arrangement of parts, as hereinafter described and claimed; VIn thedrawing, A represents the frame or casing ofthe mill, comprising abottom plate B, chute or outlet chamber C, crushing-cham# ber D, and topplate E through which the ore or material is fed into thecrushing-chamber D.

F indicates the gyratory shaft; G, the crush-` er-head mounted on saidshaft and located within the chamber D.

In the top plate Eis a bearing or opening e, having a cap or cover esuitably fastened thereon. This bearing or opening is provided withvertical grooves e2, in which are inserted bolts epassingup through thetop plate e/,and these bolts are provided with adjusting-nuts or otherequivalent devices e4. Upon the heads e5 of bolts c3 rests a continuousor solid sleeve e, which has a bore tapering downwardly, as shown.Within this bore is a bushing c7, preferably made in sections and havinginwardly/-projectin g top flanges e8 with concave under sides e9 toconform to the rounded end f of the head f of shaft F. The outside ofthebushing e7 has a taper correspending to that of the bore of the sleevee, and is held to its position or bearingwith sleeve e and shaft-head fby a set-screw'elo,

which passes through the cover or cap e', as

j shown. As the shaft-head f and bushing e7 Vwear, the nuts e4 areadjusted to raise the 'sleeve `e6 and draw or move the sections ofbushing e7 together, or in close bearing with said parts, to compensatefor such wear. The working faces d of the crushing-chamber have but asingle taper or incline in the same be composed of sections, as shown,or otherwise constructed asr desired. These Working faces, as shown,have their lower edges resting upon the top surface of the chute-chamberC and near their upper edges are provided with a lug entering acorresponding recess in the walls of chamber D.

The Crusher-head Gis composed of a sleeve has two workingfaces g g2,reversely tapered. The taper of face g2 corresponds to that of the jcrushing-faces d of chamber D, so that the `faces g' act to break thematerial fed into .chamber D and the faces g2 to successively grind orcrush said broken material.

Surrounding the opening c in the top c' of chute-chamber C is an elasticprotector H, which is preferably made of rubber or leather. It iscomposed lof an upper thick hub h, surrounding and hugging shaft F ofalower like hub h', having a shoulder h2, which is sprung into andpreferably loosely fits an annular slot in a iange c2, surroundingopening c, and of a thin curved part h3, joining the hubs h 71,', sothat it may revolve with the shaft and give to it vertical movement whenadjusted. Said 'protector H with its hubs h and h and thin curved parth3 is made in one piece preferably.' Between the shaft F and itsdrivingwheel L is another protector I, of a construction similar to thatof protector H, or it is composed of an upper and a lower hub t' andfi', respectively, joined by a thin curved part i2. Its lower hub t" is,however, fitted into a grooved sleeve 3, loosely mounted upon wheel Land held in place by a cap or plate 4. The sleeve i3 and plate 4 for thelower hub t' of protector I are provided to prevent undue wear of saidhub z' by the rotation of Wheel L, but as said protector I may beconnected to wheel L in various ways I wish it to be understood that inthis application I broadly claim a protector having upper and lower hubsunited by an intermediate thin curved part,

direction from top to bottom, and they mayv g, suitably cast or mountedon shaft F, and

ICC

between a fixture of the breaker and the gyrating shaft.

The wheel L is provided with a sleeve l, having an eccentric bore, andthe bottom plate B has a bearing b, having oil-gutter andsediment-chamber b/ and ducts b2 b3, as fully described and claimed inapplications filed of an even date herewith, Serial Nos. 213,795 and213,796. The bottom of shaft F is provided with a removable cup orsemispherical bearing k, and /c is a like bearing on a loose orremovable bottom b4 for bearing b, for the knuckle or toggle leverstep-bearing P. The removable socket-bearings 757s are provided so as toadmit of easy replacement when worn out. The bottom or plug b4 ispreferably hollow or tubular in form and is provided with a stuffing-boxb5 and a dripcock h6 to drain off the oil from bearing Z9 when desired.To facilitate this draining,an oil-duct 7a2 is formed in bearing 7d. Thebottom b4 rests upon a plate m, which is held in lposition by screws orbolts m', the heads m2 of which have their bearing in the bottom ofoil-gutter b', and the bolts pass down through vertical openings in thesides or walls of bearing b, through apertures in plate m, and have adjListing-nuts or equivalent devices m3, which are manipulated or turnedto raise and lower the shaft and crusher -head for varying the degree ofiineness of the output or for other purposes. Whenever the shaft F is soadjusted, its top bearing or bushing @.7 must be correspondinglyadjusted, as above described. Previous, however, to making any verticaladjustment for raising shaft F the set-screw e10 is raised to admit ofsuch adjustment, as this screw is always set to prevent the shaft fromrising or jumping up while operating.

The head f of the shaft F may be of any suitable conguration, but Iprefer to make it cylindrical with a rounded top f, as shown, to avoidrubbing or grinding friction between it and bushing e7.

It will be noted that the top shaft-bearing and its adjusting devices donot support the shaft, such support being solely effected by thestep-bearing of the shaft.

The bottom b4 being tubular or hollow collects all the sediment andwaste dripping into it from the parts in bearing Z9 and the workingparts above are immersed in pure or good oil.

The advantage of using the toggle P in connection with the adjustablesupporting devices for the upper end of the shaft is that said devicestake the weight of the shaft and Crusher-head off of the toggle. Hencethere is less friction at the bearings of the toggle, and as it isdirected at an angle away from the grinding or working side of thecrusherhead the same is free to assist in keeping the Crusher-head toits work, as fully described in pending application of even dateherewith, Serial No. 213,795.

In application Serial No. 213,795 I have' shown and claimed a specificform of removable and adjusting screw-bottom, which differs from thatherein described in that the lower bearing k for the toggle is integralwith or fLXed on said bottom, which is shown as being solid,with anoil-duct running through it, which duct is not a sediment-chamber. Inthis application I broadly claim a removable and adjustable bottom b4irrespective of its construction with bearing for the lower end oftoggle P, and also a hollow or sedimentchamber form of said bottom orplug and the combination therewith of a stuffing-box.

In another application, filed December 1, 1336, Serial No. 220,329, Ihave shown and claimed a specific form of screw-bottom or plug servingas a sediment-chamber.

I do not herein claim the combination of a gyratory shaft and itsdriving-wheel eccentric bore or bearing, the toggle P engaging the lowerend of said shaft and so situated that it always points away from themost eccentric portion of the said wheel bore or bearing to cause saidtoggle to incline constantly toward that part of the Crusher-head whichis in action, as the same is broadly claimed in another application ofeven date herewith, Serial No. 213,795.

In still another pen ding application of even date herewith, Serial No.213,796, I have described and claimed a sleeve-bearing with adj ustingdevices combined witha set-screw for the top of the shaft, and I do notherein claim the same broadly, but only specifically as set forth in theclaims.

Vhat I claim is- 1. In a gyratory stone-breaker,the combination of thegyratory shaft, having the straight vertical-sided cylindrical head,f',of the semispherical-formed top, f, adapted to conform to the inneror bored faces of the flanges, e8 es, of the sectional tubular bushings,the said sectional tubular bushings, e7 el, inclined on their outerfaces, from above downwardly, the tubular sleeve, e6, surrounding thesaid bushings, provided on its inner side with the tapering face,inclined from above downwardly, adapted to fit the outer faces of thesaid bushings, the top plate, E, having the bearing, or central hub, e,for the said tubular sleeve, e6, and raising, lowering and adjustingmeans, substantially as herein shown and described.

2. In a stone-breaker,the combination with shaft F, of driving-wheel L,protector I having upper and lower hubs z' and z" and thin curved parti2 uniting said hubs, a loose ring 3 on wheel L and fitting one of saidhubs, and an annular plate 724 on wheel L engaging ring substantially asset forth.

3. In a stone-breaker the combination with shaft F having driving-wheelwith eccentric bushing of knuckle or toggle step-bearing P, tubularbottom h4, plate m, and adjustingbolts m', substantially as set forth.

4:. In a stone-breaker, the combination of shaft F, having driving-wheelwith eccentric IOO IIO

bushing adjustable tubular bottom b4, means for securing said bottom inplace removable socket-bearings la k' and knuckle or toggle P,substantially as set forth.

5. In a stone-breaker, the combination of shaftF, having driving-Wheelwith eccentric z bushing adjustable bottom b4, means for securing saidbottom in place the latter having oil channel or drip be, removablesocket-bearings lc la', the latter having channel k2 and knuckle ortoggle P substantially as set forth.

6. In a stone-breaker the combination of gyratory shaft F, the knuckleor toggle P socket-bearing plate 7s having passage k2 and tubular bottomb4 serving as a sediment-chamber and adjusting mechanism for saidtubular bottom.

7. In a stone-breaker the combination of bottom plate B, having well b,the shaft F,

` tubular step-bearing b4,a socket-bearing plate k' at the top ofbearing b4, adjusting mechanism for the latter and a knuckle or toggle Pbetween said shaft and plate k' substantially as set forth.

`8. In a stone-breaker the combination of bottom plate B having well b,adjustable tubular step-bearing b having stufIing-box b5, the bearing k'having passage k2 gyratory shaftF and knuckle or toggle Pbetween shaft Fand bearing b substantially as set forth.

9. In a stone-breaker the combination of a gyra-tory shaft, drivingmechanism for said shaft, a bottom plate B having a well b, perforatedbearing-plate lo a removable and adtor I having hubs i' il rigid curvedthin part` t2 between said hubs, and hub c" having a swiveled ringsecured to it substantially as set forth.

12. In a stone-breaker the combination of a shaft, devices for gyratin gsaid shaft, a flexible or elastic protector composed of top and bottomhubs and intermediate rigid curved thin part, one of said hubs engagingthe shaft and the other having a swiveled connection with a fixture ofthe breaker, substantially as set forth.

In testimony whereof I aiix my signature in presence of two witnesses.

ROBERT MCCULLY.

IVitnesses:

S. J. VANSTAvoREN, CHAs. F. VAN HORN.

